Temporal GeoJSON demo

[sgillies]

Convert https://github.com/tmcw/the-united-states-of-america/commits/master/us.geojson to a temporal GeoJSON feature collection.

[kgeographer]

Just happen to have dates in here, could be conflated: https://github.com/ComputingPlace/Topotime/blob/master/data/us_history.json

(displayed here using Chrome only: http://dh.stanford.edu/topotime/us_states.html)

Interesting that the 'lifespans' of these features are in fact open-ended, although in our file have an end date - a bit of logic we omitted from our parsers.

Also note that states in the confederacy have MultiInterval "when"s

[sgillies]

@kgeographer Thanks! I'd call them open ended events, "being in the Union" events. The door from discussing GIS features to more interesting events is one that JSON-LD throws wide open:

{ "type": "Feature",
  "@type": "http://schema.org/Event",
  "geometry": ...,
  "when": ...,
  "who": ... }

Tantalizing... :)

[kgeographer]

@sgillies You don't see a lot of animated GIFs these days

Yes, it all comes down to Events mwahaha -- their extents in space and time, their participants, their products, ...

[kgeographer]

added states_when, minus geometries b/c we used topojson. no time today to pull geometry from the @tmcw file

https://github.com/ComputingPlace/Topotime/blob/master/data/states_when.json

[sgillies]

Progress. https://github.com/geojson/geojson-ld/blob/master/examples/us-statehood/us-statehood.geojson has a GitHub map and parses at the JSON-LD playground.

[kgeographer]

Progress is good. Questions remain: e.g. Georgia not been a US State continuously since 1788-01-02; Massachusetts has not had that geometry continuously since 1788-02-06. What to do, what to do?

[sgillies]

Finally, I tracked down the right set of data to use: http://poezn.github.io/us-history-maps/.

[emeeks]

What makes this a better dataset than using the states individually? On Apr 24, 2014 8:08 AM, "Sean Gillies" notifications@github.com wrote:

Finally, I tracked down the right set of data to use: http://poezn.github.io/us-history-maps/.

— Reply to this email directly or view it on GitHubhttps://github.com/geojson/geojson-ld/issues/11#issuecomment-41291280 .

[sgillies]

This issue is too old.